Hi Imas!
What a cool sword - congratulations on the addition!
How old do you think it is?
Also, I have been wondering if there are any geographical, cultural or temporal differences in the origin of different Pira forms? I haven't seen many myself, but those I have seen, seem to fall into two categories: The form you show here, often with a horn hilt, and the form with a hilt of pinuti wood, reminiscent of a cockatua-barong hilt with a dramatically extended dorsal crest.
Thanks for sharing your new treasure!
Cordially, - Thor